Contents | Weil-McLain EG specification

1	EG, PEG, EGH GAS-FIRED BOILERS — SERIES 4 — BOILER MANUAL
1

Contents
	Installation	3
	Piping Connections	9
	Install Boiler Controls	12
	Optional Heaters	13
	Gas Piping	14
	Wiring	15
	Final Adjustments	16
	Check Out Procedure	18
	Service	19
	Replacement Parts	22
	Data	26
	Ratings	27

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels, or to important information concerning the life of the product.

Indicates presence of hazards that will cause severe personal injury, death or substantial property damage.

Indicates presence of hazards that can cause severe personal injury, death or substantial property damage.

Indicates presence of hazards that will or can cause minor personal injury or property damage.

Indicates special instructions on installation, operation or maintenance that are important but not related to personal injury or property damage.

The boiler contains ceramic fiber and fiberglass materials. Use care when handling these materials per instructions on page 19 of this manual. Failure to comply could result in severe personal injury.

Do not use petroleum-based cleaning or sealing compounds in boiler system. Severe damage to system components can result, causing substantial property damage.

Read all instructions before installing. Failure to follow all instructions in proper order can cause severe personal injury, death or substantial property damage.

When calling or writing about the boiler— Please have the boiler model number from the boiler rating label and the CP number from the boiler jacket. You may list the CP number in the space provided on

the Installation and service certificate found on page 18.

Important

EG and EGH boilers for tankless or storage heater application are available only on special order as factory-installed optional equipment. Tankless heater cannot be added to standard block assembly. Block assembly must be ordered with heater openings. Standard boilers cannot be adapted for heater use.

2	Part Number 550-110-639/0703

EG specifications

The Weil-McLain EG Series is a notable line of cast iron, steam, and hot water boilers designed primarily for commercial and residential heating applications. Known for its robustness and efficiency, the EG boiler series has become a preferred choice for many heating professionals.

One of the main features of the Weil-McLain EG series is its durable cast iron construction. This material not only contributes to the longevity of the boiler but also ensures excellent heat retention and uniform heating. The boiler's heat exchanger is optimized to maximize thermal efficiency, delivering reliable and effective heating performance across various applications.

Another key aspect of the EG series is its heating capacity. Available in a range of sizes and outputs, the EG boiler provides flexibility, making it suitable for different heating needs. Whether it’s a small residential installation or a larger commercial system, the EG series offers models that can be tailored to meet specific load requirements.

Advanced technology is integrated into the Weil-McLain EG series to enhance efficiency and ease of use. One notable feature is its ability to operate with both gas and oil fuel types, enabling users to choose the most economical and accessible option for their needs. Additionally, the EG boilers come equipped with a reliable and intuitive control system that simplifies operation and maintenance tasks, allowing users to monitor performance easily.

The EG series also incorporates safety features, such as pressure relief valves and advanced combustion controls, which ensure safe and efficient operation. This attention to safety is essential in protecting both the system and the inhabitants of the building it serves.

Maintenance of the EG boiler is designed to be straightforward, with serviceability being a prominent focus in its design. The boiler's modular components can be accessed easily, significantly reducing downtime for repairs and maintenance.

In conclusion, the Weil-McLain EG series stands out for its reliable performance, efficiency, versatility, and robust construction. Its combination of advanced technology and user-friendly features makes it a leading choice for those seeking a dependable heating solution. Whether for residential or commercial applications, the EG series is engineered to deliver consistent heating while maximizing comfort and minimizing operating costs.